Fundamentally, there's an incompatibility between living in a country that normally has complete freedom of movement between states and a system that also essentially requires you to be a resident of a specific state for reason of things like driver's licenses and state income taxes (although if you split your time in multiple locations you may actually be required to file in multiple locations anyway). It can be done legally but, as I commented up-thread, a number of states are starting to look harder at people who spend a lot of time in their state but are paying all their income taxes elsewhere. You can't just say you live in Nevada because you have a PO Box there.